Evaporator.



G( H. BENJAMIN.

Ev/IPoRAToR. APPLICATION FILED DEC- 29. I9I7.

'FD @E GEORGE HILLAR'D BENJAMIN, OF NEW YORK, N. Y.

EVAPORATOR.

assenso.

Specification of Letters Patent.

Patented Dec. 24, 1918.

pplicaton filed December 29, 1917. Serial No. 209,411.

T 0 all whom t may concern Be it known that I, GEORGE HILLARD BEN- JAMIN, a citizen of the United States, residing at New York, in the county and State of New York, haveinvented certain new and useful ,Im rovements in Evaporators, of which the ollowing is a specification.

My invention relates to evaporators of the type usedl on ship board and designed to separate water from salt carried by the water.

My invention consists in an arrangement of parts, by reason of which the steam connections to the evaporator shell are permanently fixed, while at thev same time the coil or coils within the evaporator shell are readily removable for scaling or repairing.

The accompanying drawings will serve to illustrate my invention, in which, Figure l is a front elevation with a portion of the shell broken away to show the coils in the lowerI part of the shell.

Fig. 2 is a vertical section on the line lT-II of Fig. 1, looking from the right.

Fig. 3 is a verticalsection of the shell, corresponding to Fig. 2, with the doors which close the upper and lower portions of the shell, and the coils thereon, shown in elevation.

Fig; 4 is a transverse section of the upper portion of the evaporator, taken on the l1ne Vn-IV of Fig. 2. e

In the drawings, 5 represents the shell of the evaporator, shown as formed of plate metal, and divided into two parts, an upper part 6, and a lower part 7. The shell may be formed of cast iron, pressed steel, or otherwise, as desired. The part 6 is shown as smaller in vertical and transverse diamcter than the part 7; the parts, however, may be of the same size. Located 1n the interior of the shell and between the parts 6 and 7, is a shield or diaphragm 8. The diaphragm 8 is smaller in diameter than the part 7 therebyv providing a passage 9 for the vapor which is set free in the part 7. The diaphragm 8 is connected to a pipe 10, leading to the outside of the shell 7. If salt accumulates on the upper part of the diaphragm 8, it may be carried out of the apparatus through the pipe 10.v

Permanently connected to the casting 11 attached to the outside of the part 6, is a steam pipe 12. The construction of this castl ing is best shown in Fig. 4. The interior of the casting-is provided with a. steam passage 13, which steam passage communicates with a steam passage 14 formed in the casting 15 attached to the front of the door 16 on part (3. The cnd oi' the steam passage 14, opposite to that connected to the steam passage 13, communicates with the upper manifold 17 in part 6. Communicating with this manifold, are the steam coils 18, the lower ends of which communicate with a manifold 19 in the part 6. The forward end of the manifold 19 communicates with a steam passage 20 in casting 21, which is secured to the front of the door '16. The lower end of the steam passage 20 communicates with the steam passage 22 in casting 23, situated within and secured to the parts 6 and 7. The lower end of the steam passage 22 comn'iunicates with a steam passage 24 in casting mounted on the front of door 26 on part 7. The lower end of the steam passage 24 communicates with the outer end of the manifold 27 in the upper part of part 7. Connected to this manifold are the coils 28, thc lower ends of which communicate with the manifold 29 in the lower part of the- -right hand end of this passage communicates with a steam passage 32 in casing 33, which is connected to the outside of the part 7 and connected to the right hand end of this steam passage is a steam exit pipe 34. 35 represents a pipe by means of which fresh or salt water may `be introduced into the part 7; 36 a pipe through which fresh or salt water may be withdrawn from the part 7. 3 7 represents a pipe through which the vapor set free in the evaporator may be carried out of the evaporator. The doors 1G and 26 are removable hy removing the nuts 38-39. To support the door 16. manifolds 17 and 19, coils 18 and castings 15 and 21, a pivoted arm Jf() is mounted on the front of the part 6. which ann supports a link 41 secured to thc door 1G by means of an eye 42. When the door is in the closed position (see Fig. 2) the link 11 is near to the right hand end of the arm 10; when the door is in the open position (sce Fig. 3) near to the left hand end of the arm #10. To support the door 26, three` rollers 43 mounted on bearings 'and connected to the bottom of the door. outside of the part 7, are employed. When the door 26 is removed, it carries the manifolds 27 and 29,'coils 28, and castings 25 and 3l.

The operation of my improved device is as follows: Steam is introduced through the pipe 12, and passes through the steam passage 14 to manifold 17, coils 18 to manifold 19; thence through steam passage 2O to steam passage 22, steam assage 24, manifold 27, coils 28, manifo d 29, steam passage 30, steam passage 32, and out in the form of condensed water through pipe 34. Steam passing through the coils 28, vaporizes the salt water 'in the part 7, the vapor passing upward through the passage 9 into the part 6, where the vapor 1s superheated, which causes it to deposit its salt upon the diaphragm 8, the fresh vapor passing out of the apparatus through the pipe 37. By reason of the diaphragm 8, the vapor in part 6 is practicallr separated from the body of Water in part l?, which permits of the vapor being superheated, which would not be possible in the absence of the diaphragm, as vapor cannot be superheated in the presence of water.

The means described and shown for sup` porting the doors 16 and 26, are those which I consider best for the purpose. I wish it understood, however, that I may use any means for supporting the' doors which will be found desirable.

I have described my invention as provided with a shell divided into two parts 6 and 7, with two sets of heatin coils. Manifestly the upper shell 6 may e omitted and the vaporization effected by the coils 1n the lower part 7, in which case the diaphragm 8, as wellas the other parts which communicate between the parts 6 and 7, may be omitted, and the pipe 37 connected to the top of the part 6, vin a manner well understood ,in 'evaporator construction.

It will be seen from the drawings, that the lcommunicating passage for the steam between the coils l8- and the coils 28, is located within the shell of the structure. This is an advantage as itmaintams the temperature of the steam in the passage.

thus described my invention, what ,Having I claim is:

1. In an evaporator, the combination of an inclosing shell, a steam pipe connected permanently to the upper part of the shell, a steam pipe connected permanently to the lower part of the shell, a plurality of removable doors for said shell, coils mounted on said doors, and means carried by the doors which will serve as a means of steam communication between the steam supply pipe and the upper endof the coils and the lower end of the coils and the steam or condensed water exit pipe.

In an evaporator, the combination .of an inclosing shell, a casting connected to the upper part of the shell, .a steam'pipe convinlet and exit nasaeeo nected to the casting, the lower part ofthe shell, a steam or condensed water eXit pipe connected to said casting, a plurality of removable doors, coils mounted on said doors', a casting having a steam passage therein mounted on the upper end of the upper door and adapted'to. coperate with the eastin connected to the upper part of the Shel, a casting having a steam passage therein adapted to be interposed .bletween the lower end of the upper coils and the upper end of the lower coils, and a casting nconnected to the lower portion of the lower door having a steam passage therein and adapted to coperate with the casting connected to the lower part of the shell.

3. In an evaporator, the combination of aninclosing shell, a plurality of removable pipe connected to the lower portion of the` shell, and means mounted on the exterior of the doors for establishing steam connection between the upper door and the steam inlet pipe, the upper door andv the lower door, and the lower door and the steam outlet pipe.

4. In an evaporator, the combination of an inclosing shell, a steam' pipe connected permanently to the upperpart of the shell, a plurality of removable doors, steam coils connected to said doors, means for connecting the steam coils together, an exit pipe connected permanently to the lower part of the shell, together with means for connecting the steam pipes to the inlet and outlet ends of the coils.

5. In an evaporator the combination of an inclosing shell divided into two parts, the upper part smaller in diameter than, the lower part, a removable door connected to the upper part, a removable door connected to the lower part, steam coils mounted on said doors, a steam pipe connected to the eX- terior of the upper and smaller portion of the-shell, a steam exit pipe connected to the lower and larger portion of the shell, means for connecting the upper `portion of the coils .in the smaller portion of the shell to the steam inlet pipe,

a casting connected to v means` for connecting the coils in the upper portion of the shell and v portion, of the coils in the larger portion of the shell to the steam exit pipe.

An evaporator, in which the steam inlet and exit pipes are connected permanently to the shell, and the evaporating coils wholly removable from the shell, together with means whereby the steam inlet and exit pipes will be connected respectively to the ends of the evaporating coils Leeeneo when such coils are in position in the interior of the evaporator shell.

7. In an evaporator, the combination of en inelosing shell, a steeni pipe connected permanently to the upper part of the shell, a steam pipe connected permanently to the lowerl part of the shell, e, removable door; for seid shell, manifolds mounted on seid door and projecting inwerdl coils introduced between said manifol :1nd means Carried by the door which serve as a means of steam communication between* the steam supply ppe'and the upper manifolds, the introduced ools and the lower manifolds7 and the Steam or condensed Water exit pipe.

In testimony whereof I alx my signature in .the presence of two Witnesses.

GEORGE HLLARD BENJAMN. 

